Merge experimental/gc branch to the bleeding_edge.

src/profile-generator.h

Index: src/profile-generator.h
===================================================================
--- src/profile-generator.h	(revision 9327)
+++ src/profile-generator.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -550,7 +550,10 @@
   Vector<HeapGraphEdge*> retainers() {
     return Vector<HeapGraphEdge*>(retainers_arr(), retainers_count_); }
   HeapEntry* dominator() { return dominator_; }
-  void set_dominator(HeapEntry* entry) { dominator_ = entry; }
+  void set_dominator(HeapEntry* entry) {
+    ASSERT(entry != NULL);
+    dominator_ = entry;
+  }
 
   void clear_paint() { painted_ = kUnpainted; }
   bool painted_reachable() { return painted_ == kPainted; }
@@ -917,7 +920,7 @@
   virtual HeapEntry* AllocateEntry(
       HeapThing ptr, int children_count, int retainers_count);
   void AddRootEntries(SnapshotFillerInterface* filler);
-  int EstimateObjectsCount();
+  int EstimateObjectsCount(HeapIterator* iterator);
   bool IterateAndExtractReferences(SnapshotFillerInterface* filler);
   void TagGlobalObjects();